2021-Jan-12: It is with great sadness that the VERITAS Collaboration notes the passing of Steve Criswell on 3 January 2021 in Tucson, Arizona. Steve had been a Smithsonian Astrophysical Observatory employee for 53 years (1962-2016), during which he served many roles including Facility Manager at Fred Lawrence Whipple Observatory and Project Manager for VERITAS during its critical planning, construction and commissioning phases. Steve was a most talented person who never courted the limelight, preferring always to work away quietly and efficiently in the background on the myriad of SAO/FLWO projects. Steve's outstanding organizational and management skills played a vital role in the successful development of the field of TeV gamma-ray astronomy at the Whipple Observatory. Steve was also wonderfully supportive of the many visiting researchers and students to FLWO, and provided a welcoming environment with advice and mentorship. His loss is strongly felt by the VERITAS Collaboration, and we extend our condolences to Steve's family and friends.